Vaccine

Deputy chief medical officer Jonathan Van-Tam said: “It is possible that by combining vaccines, the immune response could be enhanced”.
The ad is the third most complained about of all time, says the Advertising Standards Authority.
Dr Susan Hopkins also warned that relaxing lockdown measures would have to be done “very slowly, very cautiously”.
"Of course, we first need to make sure that our population is vaccinated," says Liz Truss.
A WHO spokesperson said it was the "morally right thing to do" because rollout "needs to be fair" across the world.
The European Union performed an embarrassing U-turn after widespread condemnation of its move to control vaccines.
Jab found to be effective in protecting against the "Kent variant" as Boris Johnson confirms order of 60m doses.
Political passivity enabled these mutations to occur, which are now threatening to undermine our vaccine strategy, writes Jay Patel.
Drugmaker says UK insisted "you supply us first" amid anger over slow roll-out in EU.